Adjustable reproducer-arm for talking-machines.



PATENTBD JULY 16, 1907.

W. c. RUNGA. ADJUSTABLE RBPRODUCER ARM PoR TALKING MACHINES.

APPLICATION FILED AUG.1-8. 1906.

3 SHEETS-SHEET 1.

' No. 860,332. l PATENTED JULY 16, 1907. W. C. RUNGB.

ADJUSTABLE REPRODGER ARM FOR TALKING MACHINES.

` APPLIOATION FILED 4UG.18.1'906.

3 SHEETS-SHEET 2.

Wl TNES i S PATBNTED JULY 1G, 1907.

Y W; C. RUNGB. ADJUSTABLE RBPRODUGER ARM PoR TALKING MACHINES.

APPLICATION FILED AUG.18,1906.

3 SHEETSSHEBT 3.

` FIG. 9

W/TNESSES v MMA/Lw WALTER C. RUNGE, OF CAMDEN,

NEW JERSEY, ASSIGNOR TO INTERNATIONAL ROYAL PHONE COMPANYf OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE;

.A1).l"l'.l'S'J.AI3LIE REPRODUCER-ARM FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Jury 1e, 1907.

Appunto@ sied August 1s, 190e. serial. No. s's1,159.

l To all whom 'it 'may concern.'

Be it known that I, WALTER C. RUNGE, a citizen of the United States, residing in Camden, Camden county, New Jersey, have invented anew and useful Improvement in Adjustable Reproducer Arms for Talking-Machines, of which the following is a speciiication. y

My invention relates to reproducer arms for talking machines using different mandi-els of various diameters on a mandrel shaft having a fixed position and in which the reproducer is shifted With respect to the sound record by adjusting. the arm instead of shifting the mandrel shaft as in previous machines.

One of my objects is to provide mechanism by means of which the reproducer can be shifted with respect to the mandrel shaft so that records 'and mandrels of different diameters maybe used on the same machine.

vAnother object is to proyide means whereby the reproducer stylus Awill be automatically placed in proper position on records of various diameters.

Another object is to provide means for placing the reproducer into or out of operative engagementr with the record regardless of the diameter of the latter or the position of the arm. f

Another object is to provide means for guiding a reproducing trumpet along the record in such manner that 'it will be free to move universally under irregularities in the record but will hold the stylus firmly in the sound groove. y

I attain my objects in the manner shown in the accompanying drawings of my preferred form of mechan- I ism inwllich Figure 1 is a top vie'w of a graphophone provided with my improved adjustable reproducer arm; Fig. 2 a side view of a portion of the structure of Fig. 1; Fig. 3 a side view of a portion of the structure-of Fig. l; with the raising and lowering device down; Fig.. 4 a corresponding view with the lraisingand lowering device up;

Fig. `5 a side view ofthe arm in conjunction with a record of large diameter; Fig. 6 a top view of aslight modification of the arm in conjunction with a record of small diameter; Fig. 7 a sideview of the structure of Fig. 6; Fig. 8 a side view ofthe structure of Figs. 6

holder mounted on the in place of the trumpet Ah shown 'in the drawings the talking machine is in the forni of the well lmown graphophone using cylindrical records and comprises s base plate 1, n side frame 2 secured thereto, carrying a mandrel shaft 3 revolubly mounted thereon in a fixed position. A feed screw 5 provided with a pinion 6 is carried by the side frame 2 at one end and an end frame 7 at the other. `This feed screw is protected by a slotted or split tubeS surrounding it which tube also acts as a rail for the lcarriage to slide on. A gear 4 on'the frame 2 -meshes with the pinions 6 and 9 thereby causing the feed screw and mandrel to revolve in the same direction at predetermined relative rates of speed. A slide'rod 10 is secured to the frame 2 and 7 infront of the feed screw and acts as the second rail for the carriage. drel shaft is adapted to receive mandrels of different diameters as 11 and 1 2 which are held in position by a thumb nut 13. Sound records "14 and 15 are adapted to be placed 'on these mandrels. The reproducer arm comprises a carriage made up of a sleeve 16 provided with a boss or stop`22 and is slidably mounted on the rod 10. A yoke block 17, provided with a roller 18 on its lower'horn, is loosely mounted on the sleeve 1G and straddles the split tube S, the roller running on the under side thereof. A bell crank 19 is secured to the yoke 17 and is provided with a knife edge 20 adapted to engage the ieed screw 5 through' the slot in the tube 8, being held in engage ment therewith by a. spring 21. A finger piece 23 is fixed to the sleeve 16 is partially revoluble therewith, the recess 24 the yoke block limiting the motion. A cam or projection 25 engages the bell crank 19 for the purpose of throwing the knife 20 out of engagement with the feed screw 5.' I t is apparent that the carriage way comprises two tracks one of which incloses the feed screw thereby simplifying and cheapening the construction. i

^ A swinging bracket 26 is also'loosely mounted on the sleeve 16 and is limited in its movement by the slot 27 which engages a loc'k screw 28 on the yoke block 17. flhe outer end of the bracket 16 is provided with a guide 29 hinged thereto.` A slide bar 30 reciprocates in the guide and terminates in a reproducer holder' which may be either a pair of elastic fingers 31, 31 or a sound box holder 32.

A compound lever systemA connects the end of the bar`30 to the yoke block 17 This comprises a lever 33 pivoted to the bracket 26 with the long-end pivoted to the inner end of the slide bar 30. A link 34 connects the short end of the lever 33 and the carriage. -On

ing or lowering the bracket 26 the slide bar 30 is moyed in or out in the guide 29, the bend therein acting as a stop to limit the forward motion.

To raise or lower a reproducer so its stylus willbe in or out of operative engagement with a record a yoke 35 is hinged to the slide ber 30, the hinge acting u a stop to-1imit the rearwardmotion. 'A second lever The manl system isprovided to oscillate this yoke and vcomprises a link 36 pivoted to a lug on the yoke, a lever 37 pivoted to the. parts 33 and 34 at one end and to the i link 36 at the other and a link 38 pivoted to the lever l D 37 at a point between its ends and to a lug on the nger piece 23. 4This second lever system may be replaced by a single bent lever 39- connecting the yoke 35 and finger piece 23 which may be extended and slotted to receive it as shown in Figs. 6, 7 and S. As

l() shown in Fig. 1l the yoke 35 may engage a sound box y holder 32. I Figs. 9 'and 10 show manually operated means for lengthening or shortening the second lever system. The two bars 40 and 41 telescope on each other through the tube 42. The bar 41 carries a slotted piece 43 while the lever 44,v provided with a pin engaging the slot, is pivoted to the bar 40. On throwing the lever 44 from one side to the other oi the slotted piece the length of the lever system will be varied. lt is appa-r- 2O ent that when the nger piece is moved up or down lthe yoke 35 will be oscillated and the trumpet 45 or the sound box holder 32 will be raised or lowered, throwing the stylus into or out of operative contact with the record. I

l down as shown in Figs. l, 2, 3, 4 6 and 7, bringing the yoke 35 and elastic lingers 31 over the proper position on the small record 14, the bracket being locked in position by the screw 28. To lower the stylus onto the record the finger piece is raised as shown in Figs. 1, 2, 3, y

6 and 7 turning the yoke 36 down, the cam 25 moving toallow the knife edge 20 to engage the feed screw 5 which propels the entire reproducer arm across the machine. At the end of the record the operations are reversed and the arm slid back into its initial position. Ii a record o large diameter is to -be played the small mandrel is replaced by a large one and the lock screw 28 loosened so the bracket 26 can 'be raised, being re-locked in its new position. Simultaneously with the raising of the bracket 26 the slide bar 30 is I manually lengthening the lever as shown in Figs. 9

and l0. The stylus is raised and lowered on the large record exactly as it was on the small one and the knife edge is affected in precisely the same manner. rI `he elastic fingers 31 serve to guide the trumpet stylus across the record but yield when irregularities occur permitting the stylus to follow the record groove. .The lock screw fastens the bracket 26 firmlyto the sliding carri-.Lgeso there is no play orvibration of thc parts when in use. The carriage lslides freely along thc slide rod l() and the tube 8, the roller 18 reducing the friction. As the knife edge 2O is'. held in Contact with the feed screw by the spring 2l, irregularities'or eccentricitics in the carriage movement do not affect the feeding of the reproduce'r across the.

G5 record.l

In use on a small 'record the bracket 26 is pushed l Claim:-

1. A reproducer arm for talking machines comprising el carriage slidably mounted on the machine; a bracket mounted on the carriage; a slide bai' mounted on the .outer end of the bracket; means for raising and lowering the bracket: and means for simultaneously shiftingthe bar transversely with respect to the mandrel.

2. An vadjustable reproducer arm for talking machines comprising; a carriage mounted on the machine; a bracketl `mounted ou the carriage; a slide bar mounted on the outer end of the bracket; means for raising and lowering the bracket; means for simultaneously shifting the slide bar transversely with respect to the machine mandrel; and means for moving' the reprodncer into or out of operative contact with the record.

3. An adjustable reproducer arm for talking machines comprising a carriage mounted on the machine; a bracket mounted ou the carriage; a slide bar pivotally mounted on the outer end of the bracket'` a reproducer holder on the end of the slide bar; a lever fulcrumed on the bracket one end of which is pivoted to the slide bar; a link connecting the other end of the lever and the carriagewliereby the slide bur is moved transversely on the upward or downward movement of the bracket.

4. An' adjustable reproducer arm for talking machines comprising a carriage mounted on the machine.; a bracket mounted on the carriage; a slide bar pivotally mounted on the outer end of the bracket; a reproducer holder on the end of the slide bar a first lever fulcrumed to the bracket, one end of which is pivoted to the slide bar; a link connecting the other end of the lever and the carriage whereby the slide har is' moved transversely with respect to the mandrel on the upward or downward movement of the bracket; a finger piece on the carriage; a. second lever fulcrumed on the first lever a link connecting the finger piece and second lever; a yoke mounted on the slide bar; and a link connecting the second lever and yoke whereby the yoke. isroscillated on a movement of the Enger piece.

5. An adjustable reproducer arm for talking machines comprising a carriage mounted on the machine; a bracket mounted on the carriage; means for locking the bracket at any desired point; a slide bar mounted on the outer end of the bracket; means for raising and lowering the bracket; means for simultaneously shifting the slide bar transversely with respect to the mandrel andvmeans for moving the reproducer into or out of operative contact with the record.

6. An adjustable reproducer arm for talking machines.v

comprising a carriage mounted on the machine; a bracket mounted on the carriage; means for locking the bracket at any desired point a sllde bar pivotally mounted on the outer end of the bracket ;'a reproducer holder on the end of the slide bar a rst lever fulcrumed on the bracket, one

end of which is pivoted to the slide bar; a link connecting the other end of the lever and the carriage whereby the slide bar is moved transversely with respect to the machine mandrel on the upward or downward movement o the bracket; a finger piece on the carriage; a second lever fulcrnmed on the first lever; a link connecting the finger piece and second lever; a yoke mounted on the slide bar; and a' link connecting the-yoke and second lever whereby the yoke is oscillated on a movement of the linger piece.

7. An adjustable reproducer arm for talking machines comprising a carriage' mounted on the machine; a bracket mounted on the carriage; means for locking thebracket at any desired point'; a slide bar mounted on the outer end of the bracket; a reproducer holder on the end of the slide bar means for raising or lowering the bracket; means for simultaneously shifting the slide bar transversely with respect to the machine mandrel; means for moving ,the reproducer into or out of operative contact with the record and means for propelling the arm across the' record.

S. An adjustable reproducer arm for talking machines comprising a carriage mounted on the t.\achine;,a. bracket mounted on the carriage; a slide bar pivotally mounted on the outer end of the bracket; a reproducer holder on the end of the slide bar a first lever fulcrumed to the bracket, one end of which is pivoted to the slide bar;= a link connecting the other end of the lever andthe carriage whereby the slide bar is shifted transversely with respect to the mandrel on the upward or'downward movement of the brac adapted toengage the machine feed screw; means for holding thezkniteedge in yielding contact Awith the screw;

9.`In a tsl-king machine an adjustable port vcomprising@` carriage mounted on reproducer supthe machine; a

the bracket,

l on the carriage; a slide bar pivtaily mounted on the outerend of the bracket; elastic fingers the bracket -11. An adjustable reproducer comprising a carriage mounted on the machine;

end ofl the bracket;

means for raising and lowering the bracket;and means for simultaneously shifting the slide bar -with respect toihe machine mandrel.

12. In a talking machine the combination o'f a slide rod machine; a feed screw revolubly mounted on the machine parallel to the rod; a split ,tube' surrounding the feed screw, an adjustable reproducer arm` slidably mounted on said slide rod and split tube; and means carried by the arm adapted to engage the feed screw to propel WALTER c. RUNGE.

Witnesses:

Roar. B. KlLLoonn, Corman Dxnm.. 

